That looks really good! How much wider track is the front from the rear now? Maybe you could measure from edge of tire to edge of tire? Im jealous! I want to do this to my car now. haha
Just a quick internets search and I found
135i front track: 58.3
Rear track: 59.6
1M Front Track: 60.7
Rear Track: 60.7

But Im guessing that is from edge of tire to edge of tire. It would be nice to to measure edge of fender to edge of fender. And maybe if you ran a square tire set up on the 135i with the M front end, they would be the same width. Either way, the car looks great man!